/* subsegs.c - subsegments -
Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2002
+ 1999, 2000, 2002, 2004, 2005
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
#endif /* BFD_ASSEMBLER */
-static void subseg_set_rest PARAMS ((segT, subsegT));
+static void subseg_set_rest (segT, subsegT);
static fragS dummy_frag;
static frchainS absolute_frchain;
\f
void
-subsegs_begin ()
+subsegs_begin (void)
{
/* Check table(s) seg_name[], seg_N_TYPE[] is in correct order */
#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
* segment context correct.
*/
void
-subseg_change (seg, subseg)
- register segT seg;
- register int subseg;
+subseg_change (register segT seg, register int subseg)
{
now_seg = seg;
now_subseg = subseg;
}
\f
static void
-subseg_set_rest (seg, subseg)
- segT seg;
- subsegT subseg;
+subseg_set_rest (segT seg, subsegT subseg)
{
register frchainS *frcP; /* crawl frchain chain */
register frchainS **lastPP; /* address of last pointer */
#else /* BFD_ASSEMBLER */
segT
-subseg_get (segname, force_new)
- const char *segname;
- int force_new;
+subseg_get (const char *segname, int force_new)
{
segT secptr;
segment_info_type *seginfo;
else
secptr = bfd_make_section_anyway (stdoutput, segname);
+#ifdef obj_sec_set_private_data
+ obj_sec_set_private_data (stdoutput, secptr);
+#endif
+
seginfo = seg_info (secptr);
if (! seginfo)
{
}
segT
-subseg_new (segname, subseg)
- const char *segname;
- subsegT subseg;
+subseg_new (const char *segname, subsegT subseg)
{
segT secptr;
segment_info_type *seginfo;
/* Like subseg_new, except a new section is always created, even if
a section with that name already exists. */
segT
-subseg_force_new (segname, subseg)
- const char *segname;
- subsegT subseg;
+subseg_force_new (const char *segname, subsegT subseg)
{
segT secptr;
segment_info_type *seginfo;
}
void
-subseg_set (secptr, subseg)
- segT secptr;
- subsegT subseg;
+subseg_set (segT secptr, subsegT subseg)
{
if (! (secptr == now_seg && subseg == now_subseg))
subseg_set_rest (secptr, subseg);
/* Get the gas information we are storing for a section. */
segment_info_type *
-seg_info (sec)
- segT sec;
+seg_info (segT sec)
{
if (sec == bfd_abs_section_ptr)
return abs_seg_info;
}
symbolS *
-section_symbol (sec)
- segT sec;
+section_symbol (segT sec)
{
segment_info_type *seginfo = seg_info (sec);
symbolS *s;
}
else
{
+ segT seg;
s = symbol_find_base (sec->symbol->name, 0);
- if (s == NULL)
+ /* We have to make sure it is the right symbol when we
+ have multiple sections with the same section name. */
+ if (s == NULL
+ || ((seg = S_GET_SEGMENT (s)) != sec
+ && seg != undefined_section))
s = symbol_new (sec->symbol->name, sec, 0, &zero_address_frag);
- else
+ else if (seg == undefined_section)
{
- if (S_GET_SEGMENT (s) == undefined_section)
- {
- S_SET_SEGMENT (s, sec);
- symbol_set_frag (s, &zero_address_frag);
- }
+ S_SET_SEGMENT (s, sec);
+ symbol_set_frag (s, &zero_address_frag);
}
}
#endif /* ! BFD_ASSEMBLER */
int
-subseg_text_p (sec)
- segT sec;
+subseg_text_p (segT sec)
{
#ifdef BFD_ASSEMBLER
return (bfd_get_section_flags (stdoutput, sec) & SEC_CODE) != 0;
#endif /* ! BFD_ASSEMBLER */
}
+/* Return non zero if SEC has at least one byte of data. It is
+ possible that we'll return zero even on a non-empty section because
+ we don't know all the fragment types, and it is possible that an
+ fr_fix == 0 one still contributes data. Think of this as
+ seg_definitely_not_empty_p. */
+
+int
+seg_not_empty_p (segT sec ATTRIBUTE_UNUSED)
+{
+ segment_info_type *seginfo = seg_info (sec);
+ frchainS *chain;
+ fragS *frag;
+
+ if (!seginfo)
+ return 0;
+
+ for (chain = seginfo->frchainP; chain; chain = chain->frch_next)
+ {
+ for (frag = chain->frch_root; frag; frag = frag->fr_next)
+ if (frag->fr_fix)
+ return 1;
+ if (obstack_next_free (&chain->frch_obstack)
+ != chain->frch_last->fr_literal)
+ return 1;
+ }
+ return 0;
+}
+
void
-subsegs_print_statistics (file)
- FILE *file;
+subsegs_print_statistics (FILE *file)
{
frchainS *frchp;
fprintf (file, "frag chains:\n");
for (fragp = frchp->frch_root; fragp; fragp = fragp->fr_next)
{
-#if 0
- switch (fragp->fr_type)
- {
- case rs_fill:
- fprintf (file, "f"); break;
- case rs_align:
- fprintf (file, "a"); break;
- case rs_align_code:
- fprintf (file, "c"); break;
- case rs_org:
- fprintf (file, "o"); break;
- case rs_machine_dependent:
- fprintf (file, "m"); break;
- case rs_space:
- fprintf (file, "s"); break;
- case 0:
- fprintf (file, "0"); break;
- default:
- fprintf (file, "?"); break;
- }
-#endif
count++;
}
fprintf (file, "\n");